Novel angled gantry approach reduces breast radiation exposure
Long believed to be a disease of biblical times, leprosy, also known as Hansen’s disease, continues to be seen in the United States. “Approximately 150 cases are diagnosed each year with 3,000 people in the U.S. currently being treated for leprosy, says James Krahenbuhl, Ph.D., director of the Health Resources Service Administration’s National Hansen’s Disease
Full Post: Leprosy still present in the U.S.
A novel angled gantry approach to coronary CT angiography reduced radiation exposure to the breast by more than 50%, according to Thomas Jefferson University researchers.
Ethan Halpern, M.D., associate professor of Radiology at Jefferson Medical College of Thomas Jefferson University in Philadelphia, presented the research at the 94th Scientific Assembly and Annual Meeting of the Radiological Society of North America.
“Radiation dose to the breast during coronary CT is especially a concern for young women as the dose may increase the risk for breast cancer,” Dr. Halpern said. “Physicians are working diligently to reduce the patient radiation dose related to coronary CT.”
Dr. Halpern and colleagues retrospectively reviewed 100 consecutive coronary CT angiography images that were obtained with a 64 detector helical scanner. They evaluated sagital images to: 1) define the position of the breasts and the gantry angulation required to perform a CT examination parallel to the long axis of the heart; and 2) determine the reduction in breast exposure to radiation that might be accomplished by imaging the heart with an angled gantry acquisition.
The standard axial imaging plane for coronary CT angiography required a 6.5cm. ? 1.8 cm. overlap with the lower breast. The overlap with the lower breast using the angled scan was reduced in half to 3.2 cm ? 1.6 cm (P<0.001).
“Angled gantry is a feasible technique for coronary CT angiography that reduces radiation exposure to the breast by 50%,” Dr. Halpern said. “These results warrant the development of machines that can perform this technique.”
Coronary CTA offers a low cost, non-invasive alternative to conventional angiography for evaluating patients who are suspected of having coronary artery disease; true even if the patients have calcified coronary artery plaques, according to a study performed at the Thomas Jefferson University Hospital, Philadelphia, PA. The study included 31 patients who had one or more
Full Post: Coronary CTA is a low cost, non-invasive alternative for evaluating coronary artery disease
Cardiac CT can effectively assess coronary artery stenosis, according to a large study performed at Leiden University Medical Center in Leiden, The Netherlands. The study consisted of 1,331 patients who had suspected coronary artery disease with 50% or more stenosis. 10,561 coronary artery segments were analyzed during the study. “We found a 98% sensitivity rate
Full Post: Cardiac CT effectively assesses coronary artery stenosis
For the first time researchers are getting a detailed look at the interior of human coronary arteries, using an optical imaging technique developed at the Wellman Center for Photomedicine at Massachusetts General Hospital (MGH). In their report in the journal JACC: Cardiovascular Imaging, the research team describes how optical frequency-domain imaging (OFDI) gives three-dimensional, microscopic
Full Post: Optical frequency-domain imaging provides 3-D view of human coronary arteries
The world’s first radar breast imaging system developed at Bristol University that could revolutionise the way women are scanned for breast cancer, is being trialled at North Bristol NHS Trust (NBT). Professor Alan Preece and Dr Ian Craddock from the University of Bristol have been working for a number of years to develop a
Full Post: New technology could revolutionse breast cancer screening
In a development that researchers say is likely to quell concerns about the value of costly computed tomography (CT) scans to diagnose coronary artery blockages, an international team led by researchers at Johns Hopkins reports solid evidence that the newer, more powerful 64-CT scans can easily and correctly identify people with major blood vessel disease
Full Post: Advanced CT scans 100 percent accurate in checking for clogged arteries